package com.community.web.master.config;

import com.community.web.master.json.JacksonObjectMapper;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

//@Configuration
public class RegisConfig implements WebMvcConfigurer {


    //配置全局类型转换器
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器 底层使用Jackson将Java对象转为Json
        mappingJackson2HttpMessageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的信息转换器对象追加到mvc框架的转换器集合
        converters.add(0, mappingJackson2HttpMessageConverter);
    }
}
